//
// Created by shuhongfan on 2021/6/8.
//

#include <stdio.h>
#include <math.h>
int main(){
    int i,j,k;
    for(i=2;i<100;i++){
        k=1;
        for (j=2;j<= sqrt(i);j++)
            if (i%j==0) k=0;
        if(k==1) printf("%d\t",i);
    }
}